Mold jacket



J. F. HlNEs MOLD JACKET Filed Nov. 2, 1929 JNVENToR. :fame: 7T f//fzes Patented Dec. 1, 1931 UETED? STATES JAMES F. EINES, oFLAxEwoon, omo i MOLD JACKET Application inea November 2, 1929. serai No. 404,229.

The present invention relates, as indicated, to mold jackets, and the primary object thereof is to provide a metal mold jacket, preferably made of aluminum, which, while being extremely light, is sufficiently strong for its purposes. A further object of the invention is to provide a device of the class described provided with heat insulation means whereby handling of the same is facilitated. Further objects of the invention will appear as the description proceeds. To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

The annexed drawings and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

ln said annexed drawings:

Fig. 1 is a perspective view of a mold jacket constructed in accordance with my invention; Fig. 2 is a broken section' taken substantially upon the plane of the line 2-2 of Fig. 1; and Fig. 3 is a section taken substantially upon the line 3-3 of Fig. 1.

As is clearly shown in the drawings, my invention comprises a mold jacket indicated generally at 10 formed of end walls 11 and side walls 12, said walls being suitably secured to each other to form a rigid rectangular jacket, though it is to be understood, of course, that the jacket may take any desired form.

ln each end wall 11 there is formed a socket 13, said socket extending substantially the entire distance between the adjacent corners 14 of the jacket. Within said socket there is mounted a block 15 of a heat insulating material having a specific weight materially less than that of the metal wall 11 and a unit strength approaching that of said wall.

which have a very low specific weight and which are relatively strong. The block 15 may be secured in place in the socket 13 by machine screws 16 threaded through said block and into the wall 11. As will be ob- There are numerous woods, for instance,`

vious from an inspection of Figj2, the depth of the socket 18 is greater than one-half the thickness of the wall 1,1.'V i i i L i Similarly, each side wall 12 is formed with a socket 17 which socket extends substan- 55 tially from end to' end of the wall and substantially from the upper edge 20 tothe lower edge 21 thereof.Y In each of. said sockets 17 there is mounted ablock 18similar tothe blocks 15, said blocks 18 being secured inthe tu sockets 17 bymeans `of screws 19 or other equivalent fastening means.

' From the above, it will be seen that I have provided a mold jacket which, while it has the advantage of the very smooth and heatresistant interior wall attainable by the use of metal, is very light in weight. Prefer- Y ably, aluminum is used for forming the metal walls, and it is, of course, desirable to use a minimum quantity of aluminum in 'i6 forming the jacket, not only to cut down the weight of the finished jacket, but also to reduce the cost thereof. It has been found that an aluminum acket formed with the sockets 13 and 17 is subject to excessive warpage un- 75 less means are provided for stifening the very thin walls of the bases of said sockets. The inserted blocks 15 and 18 .provide the necessary strength at very low cost and withont adding excessively to the weight of the '86 finished article. The blocks 15 and 18 are further advantageous in that they comprise portions of the jacket which do not become excessively heated by the molten metal within y. the mold, and consequently they add materially to the facility with which the jackets may be handled.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention:

1. A mold jacket formed of metal walls, said walls being formed in their exterior surfaces with sockets of an area approximating the area of said walls and of a depth greater than one-half the thickness of said Walls, and blocks of heat-insulating material having a specific Weight materially less than that of the metal Walls and a unit strength approaching that of said Walls received in said sockets, said blocks completely lilling said sockets.

2. A mold jacket formed of metal Walls, the thickness of said Walls being materially reduced at a plurality of spaced locations of relatively large area, and Wooden blocks equal in thickness to said reduction secured to said iv Walls covering said regions of reduced thickness.

3. A mold jacket formed of metal Walls, the interior surfaces of said Walls being smooth and the exterior surfaces of said Walls being formed With sockets, and Wooden blocks secured in and lilling said sockets.

4. A moldjacket formed of metal Walls, certain of said Walls having sockets formed in the exterior surfaces thereof, and Wooden blocks set into and completely filling said,

sockets, the depth of said sockets being greater than one-half the thickness of said Walls. Signed by me this 30th dayA of October,

1929. A JAMES F. HINES.

:sesY 

